7 billion people in the world. Unless your bi you've gotta cut that in half. Plus you've gotta isolate the people in your reasonable dating age range. Then since most people don't travel very far in their lifetime you've gotta shrink that number down to just the people in your local area. Cut that number down even more to just the people you find physically attractive. And then cut it down to the people who's personalities you actually like. Cut that down to the people you can actually maintain a long term relationship with. Why would you bother with adding on another limiting factor? Especially a factor that means pretty much nothing now that airplanes and the Internet exist.

In theory I don't have a problem with this, I mean Iv'e found people of different races attractive, BUT I think that there are plenty of obstacles that we unfortunately can't deny in doing so especially when it comes to marriage.